stockBadboy, while you are adding up shares and trades, you have not mentioned the fact that some are simply "trading" the stock.... the Volume on DBV really started going on May 2, 2013... Canaworms (#33) has bought 7.4 and sold 6.7 M for example, Anon leads the selling but many brokers/brokerages use Anon to hide their identity for various reasons this way they can remain invisible and what house is doing what...!

Here is a breakdown since May 1/2013, it might be of some use:

 

House Positions for C:DBV from 20130501 to 20130621

 

House Bought $Val Ave Sold $Val Ave Net $Net
79 CIBC 1,666,975 171,116 0.103 392,200 41,526 0.106 1,274,775 -129,590
7 TD Sec 3,221,401 383,592 0.119 1,982,640 246,478 0.124 1,238,761 -137,114
59 PI 1,614,296 194,289 0.12 385,822 54,982 0.143 1,228,474 -139,307
9 BMO Nesbitt 1,238,200 131,949 0.107 462,000 49,855 0.108 776,200 -82,094
33 Canaccord 7,427,500 643,613 0.087 6,796,500 548,282 0.081 631,000 -95,331
19 Desjardins 677,100 75,115 0.111 89,375 10,335 0.116 587,725 -64,780
95 Wolverton 721,000 100,727 0.14 233,500 31,527 0.135 487,500 -69,200
89 Raymond James 435,000 59,865 0.138 0   435,000 -59,865
2 RBC 1,660,315 178,282 0.107 1,330,900 160,246 0.12 329,415 -18,036
85 Scotia 1,264,820 147,076 0.116 953,520 110,174 0.116 311,300 -36,902
143 Pershing 200,000 30,000 0.15 0   200,000 -30,000
68 Leede 150,000 20,500 0.137 0   150,000 -20,500
22 Fidelity 157,000 18,705 0.119 31,000 3,335 0.108 126,000 -15,370
80 National Bank 280,400 34,938 0.125 174,400 23,764 0.136 106,000 -11,174
14 ITG 120,000 15,750 0.131 20,000 3,300 0.165 100,000 -12,450
81 HSBC 125,000 15,925 0.127 40,000 3,200 0.08 85,000 -12,725
69 Jordan 75,000 8,755 0.117 0   75,000 -8,755
46 Macquarie 291,000 35,400 0.122 228,500 28,057 0.123 62,500 -7,343
124 Questrade 65,611 5,166 0.079 29,111 4,409 0.151 36,500 -757
62 Haywood 30,000 4,500 0.15 0   30,000 -4,500
28 BBS 74,000 9,830 0.133 51,500 7,422 0.144 22,500 -2,408
58 Qtrade 37,000 4,900 0.132 17,000 1,750 0.103 20,000 -3,150
88 Credential 80,400 10,196 0.127 64,500 9,057 0.14 15,900 -1,139
57 Interactive 20,500 1,616 0.079 5,900 383 0.065 14,600 -1,233
99 Jitney 21,000 3,075 0.146 16,000 1,785 0.112 5,000 -1,290
145 Woodstone 15,000 2,200 0.147 10,000 1,300 0.13 5,000 -900
44 Jones Gable 75,000 10,500 0.14 75,000 10,500 0.14 0 0
83 Mackie 59,000 4,520 0.077 110,000 15,699 0.143 -51,000 11,179
54 Global 0   971,150 135,254 0.139 -971,150 135,254
1 Anonymous 3,229,500 349,027 0.108 10,561,500 1,168,507 0.111 -7,332,000 819,480
TOTAL 25,032,018 2,671,127 0.107 25,032,018 2,671,127 0.107 0 0